C + + Get all the file names under the folder three ways

1

Use the DOS command to save all file names in the folder to the specified file, then read from the file and store in the vector

         String imglist_file = "Test_result\\imglist.txt";//Store file name list
	string temp_imgname;
	String Dir_command ("dir");
	Dir_command + = M_strimageset + "/b >" + imglist_file;//m_strimageset is the variable that I built before I stored the folder path
	ifstream file (imglist_ File.c_str (), ios::in);
	System (DIR_COMMAND.C_STR ());
	Vector <string> imglist;

	The image name is stored in vector while
           (file>>temp_imgname)
	{
	     imglist.pushback (temp_imgname);
	}
	File.close ();
		

2

Use _findfirst, _findnext to get all file names

         string Temp_imgname;
	Long   hfile   =   0;//file handle
	_finddata_t fileinfo;//file information
          vector<string> imglist	
	if (hfile = _findfirst (m_strimageset+ "\\*", &fileinfo))!=  -1)//m_strimageset is the variable I created earlier. Folder path
	{do
		{if
			((Fileinfo.attrib &  _a_subdir))
			{
				continue;//if it is a directory skip
			}
			else
			{
				Imglist.push_back (temp_imgname);
			}
		while (_findnext (hfile, &fileinfo)  = = 0);
	
		_findclose (hfile);
	}

3 Using Finder to get

         Win32_find_data Findfiledata;
	int finder = 1;
	CString m_strimageset_t = m_strimageset + "\\*.*";)//m_strimageset is a variable that I built before. The folder path
	CString m_strimageset_t1 = M_strimageset + "\";
         string imgname_temp;
         Vector <string> imglist;
 	HANDLE hfind = FindFirstFile (m_strimageset_t, &findfiledata);
	if (hfind = = Invalid_handle_value)
	{
		printf ("INVALID File HANDLE. GetLastError reports%d\n ", GetLastError ());
		return;
	}
	else
	{while  
		(Finder)
		{

			if (_tcscmp (findfiledata.cfilename,_t (".")) ==0) | | (_TCSCMP (findfiledata.cfilename,_t ("..")) ==0)//filter The default two folders
			in the explorer. {
				finder = FindNextFile (hfind,&findfiledata);  
				Continue;
			}
			else
                           {
				temp_imgname = findfiledata.cfilename; 
				Imglist.pushback (temp_imgname);
	}} FindClose (hfind);